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Set value in a excel worksheet to equal the length of the previous column in C#

I have a excel workbook with multiple worksheets.I would like to set one column H to be a formula field which is equal to the length of column G. How can I do it using C#.

Thanks,
Aditya
0
giveindia
Asked:
giveindia
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1 Solution
 
Rgonzo1971Commented:
Hi,

pls try something like this
string s = "=LEN(RC[-1])";
Range rng1 = sheet.get_Range(sheet.Cells[7, 2], (sheet.Cells[7, 2] as Excel.Range).get_End(Excel.XlDirection.xlDown)).Offset[0,1];
rng1.FormulaR1C1 = s;
rng1.Value2 = rng1.Value2;

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Regards
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giveindiaAuthor Commented:
What is value1 and value2 here ?
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Rgonzo1971Commented:
.Value2 gives you the underlying value of the cell (could be empty, string, error, number (double) or boolean)

.Value gives you the same as .Value2 except if the cell was formatted as currency or date it gives you a VBA currency (which may truncate decimal places) or VBA date.

Using .Value is usually a bad idea because you may not get the real value from the cell, and they are slower than .Value2
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giveindiaAuthor Commented:
So the first time the excel is saved the value gets saved correctly. If I open the excel and edit a cell the length column does not get updated.

Thanks,
Aditya
0
 
Rgonzo1971Commented:
pls try
        string s = "=LEN(RC[-1])";
        Rng1= (Excel.Range)xlWorkSheet.get_Range(xlWorkSheet.Cells[2, 7] as Excel.Range, (xlWorkSheet.Cells[2, 7] as Excel.Range).get_End(Excel.XlDirection.xlDown)).Offset[0,1];
        Rng1.FormulaR1C1 = s;
        Rng1.Value2 = Rng1.Value2;

Open in new window

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giveindiaAuthor Commented:
THis is the code that I have.
 string s = "=LEN(RC[-1])";
                               Microsoft.Office.Interop.Excel.Range rng1 = wsheet.get_Range(wsheet.Cells[2, 7], (wsheet.Cells[dsMDOID.Tables[0].Rows.Count + 1, 7] as Excel.Range).get_End(Excel.XlDirection.xlDown)).Offset[0, 1];
                               rng1.FormulaR1C1 = s;
                               rng1.Value2 = rng1.Value2;
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giveindiaAuthor Commented:
Also even if  I have 20 rows in the sheet it seems to apply the formula to around 65K rows.
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Rgonzo1971Commented:
then try
  string s = "=LEN(RC[-1])";
Microsoft.Office.Interop.Excel.Range rng1 = wsheet.get_Range(wsheet.Cells[2, 7], (wsheet.Cells[dsMDOID.Tables[0].Rows.Count + 1, 7] as Excel.Range)).Offset[0, 1];
rng1.FormulaR1C1 = s;
rng1.Value2 = rng1.Value2; 

Open in new window

0
 
giveindiaAuthor Commented:
The code you posted seems to be similar to what I had.

Thanks,
Adittya
0
 
Rgonzo1971Commented:
get_end removed
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